main project split, authpassword endpoint created

TimetableDesigner.Backend.Services.Authentication.Core/Helpers/IPasswordHasher.cs

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+namespace TimetableDesigner.Backend.Services.Authentication.Core.Helpers;
+
+public interface IPasswordHasher
+{
+    PasswordHashData CreateHash(string password);
+    bool ValidatePassword(PasswordHashData hash, string password);
+}

TimetableDesigner.Backend.Services.Authentication.Core/Helpers/PasswordHashData.cs

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+namespace TimetableDesigner.Backend.Services.Authentication.Core.Helpers;
+
+public record PasswordHashData(
+    byte[] Hash,
+    string Salt
+);

TimetableDesigner.Backend.Services.Authentication.Core/Helpers/PasswordHasher.cs

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+using System.Security.Cryptography;
+using System.Text;
+using Konscious.Security.Cryptography;
+
+namespace TimetableDesigner.Backend.Services.Authentication.Core.Helpers;
+
+public class PasswordHasher : IPasswordHasher
+{
+    private const string RandomPasswordCharacters = "QWERTYUIOPASDFGHJKLZXCVBNMqwertyuiopasdfghjklzxcvbnm1234567890!@#$%^&*()-_=+[{]};:'\"\\|,<.>/?";
+
+    public PasswordHashData CreateHash(string password)
+    {
+        string salt = RandomNumberGenerator.GetString(RandomPasswordCharacters, 20);
+        byte[] hash = ComputeHash(password, salt);
+        PasswordHashData data = new PasswordHashData(hash, salt);
+        return data;
+    }
+
+    public bool ValidatePassword(PasswordHashData hash, string password)
+    {
+        byte[] actualHash = hash.Hash;
+        byte[] checkedHash = ComputeHash(password, hash.Salt);
+        bool checkResult = checkedHash.SequenceEqual(actualHash);
+        return checkResult;
+    }
+
+    protected byte[] ComputeHash(string password, string salt)
+    {
+        Argon2id hashFunction = new Argon2id(Encoding.UTF8.GetBytes(password))
+        {
+            Salt = Encoding.UTF8.GetBytes(salt),
+            DegreeOfParallelism = 8,
+            MemorySize = 65536,
+            Iterations = 4
+        };
+        byte[] hash = hashFunction.GetBytes(32);
+        return hash;
+    }
+}

TimetableDesigner.Backend.Services.Authentication.Core/Helpers/TokenGenerator.cs

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+using Microsoft.Extensions.Configuration;
+
+namespace TimetableDesigner.Backend.Services.Authentication.Core.Helpers;
+
+public class TokenGenerator
+{
+    /*
+    public TokenGenerator(IConfiguration configuration, DatabaseContext databaseContext)
+    {
+        
+    }
+    
+    public string GenerateAccessToken(Account account)
+    {
+        
+    }
+
+    public async Task<string> GenerateRefreshTokenAsync(Account account)
+    {
+        
+    }
+    
+    public async Task<string> ExtendRefreshTokenAsync()
+    {
+        
+    }*/
+}